Triangle Properties and Classifications

This video tutorial explains how to classify triangles by their angles and sides. It covers the types of triangles based on sides: equilateral, scalene, and isosceles, and based on angles: acute, right, and obtuse. The video also provides mnemonic devices to help remember these classifications and demonstrates how to combine angle and side classifications to fully describe a triangle.

What are the two main ways to classify triangles?

• By their color and size

• By their angles and sides

• By their weight and height

• By their perimeter and area

Which type of triangle has all sides of equal length?

• Scalene

• Isosceles

• Right

• Equilateral

What is a characteristic of a scalene triangle?

• All sides are equal

• One angle is 90 degrees

• Two sides are equal

• No sides are equal

How many sides are equal in an equilateral triangle?

• One

• None

• Two

• All three

How can you remember the properties of an equilateral triangle?

• Imagine a cute baby

• Think of two 'S's for two equal sides

• Remember the rhyme 'Jack Sprat'

• Think of the word 'equal'

What is the defining feature of a scalene triangle?

• No sides are equal

• One angle is 90 degrees

• All sides are equal

• Two sides are equal

What is the mnemonic device used to remember scalene triangles?

• Imagine a cute baby

• Think of two 'S's for two equal sides

• Remember the rhyme 'Jack Sprat'

• Think of the word 'equal'

How many sides are equal in a scalene triangle?

• None

• One

• Two

• All three

Which triangle has all sides of different lengths?

• Right

• Equilateral

• Isosceles

• Scalene

How can you remember the properties of an isosceles triangle?

• Think of the word 'equal'

• Think of two 'S's for two equal sides

• Remember the rhyme 'Jack Sprat'

• Imagine a cute baby